public abstract class union_find_v0 {
    public int a[];

    public union_find_v0() {

    }

    public union_find_v0(int number)
    { 
       a=new int[number];       //给存储下标的数组一个空间
       for(int i=0;i<number;i++)  //初始化
       {
        a[i]=i;
       }  
    }
    public boolean connected(int a, int b) {
        return true;
    }

    public void union(int a,int b) {
    }
}
